Hi, I am curious about the sound I am hearing.
I brought the ML120 PRO RGB 3-pack fans. I can hear a whine/electrical noise whenever the fan spin. Getting louder as the RPM ramps up. All 3 of them have this sound. All of them are connected to PWM header on the z370 Gaming 7.
I have another 3x ML140 pro and have no such sound. will post the sound later.